Number of 2 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it, modulo 4.
A239406
Number of 2 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it, modulo 4.
Terms
- a(0) =5a(1) =23a(2) =105a(3) =478a(4) =2165a(5) =9811a(6) =44399a(7) =201006a(8) =909679a(9) =4117547a(10) =18635613a(11) =84347726a(12) =381758761a(13) =1727876419a(14) =7820451787a(15) =35395951502a(16) =160204196803a(17) =725095175067
External references
- oeis: A239406